MAX17501
60V, 500mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter
60V Synchronous Buck Converter with Internal FETs Enables High Efficiency
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Overview
Features and Benefits
- Eliminates External Components and Reduce Total Cost
- No Schottky-Synchronous Operation for High Efficiency and Reduced Cost
- Internal Compensation and Feedback Divider for 3.3V and 5V Fixed Outputs
- All-Ceramic Capacitors, Ultra-Compact Layout
- Reduces Number of DC-DC Regulators to Stock
- Wide 4.5V to 60V Input Voltage Range
- 0.9V to 92%VIN Adjustable Output Voltage
- Delivers up to 500mA
- 600kHz and 300kHz Switching Frequency Options
- Available in a 10-Pin, 3mm x 2mm TDFN Package
- Reduces Power Dissipation
- Peak Efficiency > 90%
- PFM Feature for High Light-Load Efficiency
- Shutdown Current = 0.9µA (typ)
- Operates Reliably in Adverse Industrial Environments
- Hiccup-Mode Current Limit, Sink Current Limit, and Autoretry Startup
- Built-In Output-Voltage Monitoring (Open-Drain Active-Low RESET Pin)
- Resistor-Programmable EN/UVLO Threshold
- Adjustable Soft-Start and Prebiased Power-Up
- High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range
Product Details
The MAX17501 high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operates over a 4.5V to 60V input voltage range. This device is offered in a fixed 3.3V , 5V or adjustable output voltage (0.9V to 92%VIN) while delivering up to 500mA of current. The output voltage is accurate to within ±1.7% over -40°C to +125°C. The MAX17501 is available in a compact TDFN package. Simulation models are available.
The device features peak-current-mode control with pulse-width modulation (PWM). Users can choose devices with either pulse frequency modulation (PFM) or forced PWM scheme. PFM devices skip pulses at light load for higher efficiency, while forced-PWM devices operate with fixed switching frequency at any load for noise sensitive-applications. The low-resistance, on-chip MOSFETs ensure high efficiency at full load and simplify the layout.
A programmable soft-start feature allows users to reduce input inrush current. The device also incorporates an output enable/undervoltage lockout pin (EN/UVLO) that allows the user to turn on the part at the desired input-voltage level. An open-drain active-low RESET pin provides a delayed power-good signal to the system upon achieving successful regulation of the output voltage.
Applications
- Base Station, VOIP, Telecom
- Battery-Powered Equipment
- General-Purpose Point-of-Load
- Home Theater
- HVAC and Building Control
- Industrial Process Control
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (7)
Documentation & Resources
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MAX17501 Reliability Data1/12/2023PDF41K
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UG-6207: MAXREFDES46# Quickstart Guide9/3/2015PDF464K
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UG-5861: EE-SIM Design and Simulation Environment User Guide5/5/2014PDF3M
Tools & Simulations
EE-Sim Power® Tools
The EE-Sim DC-DC Converter Tool uses your requirements to quickly create a complete power design including a schematic, BOM with commercially available parts, and time and frequency domain simulations. Your customized schematic can be downloaded for further analysis in the standalone EE-Sim OASIS Simulator, featuring SIMPLIS and SIMetrix SPICE engines.
SIMPLIS Models
Reference Designs (6)
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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Lead Times
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